> Wait, it's first come first served? I thought airlines was like hotel rooms, you
> book them in advance, choose specific seats, show up? Then if the plans is in the
> air and nobody shows up to fill a seat, move around. I do that at hockey games all
> the time. If nobody shows up to fill lower seats in an hour, I show up and sit down.
> I've moved from upper level to lower level that way.
Depends on the airline